| abstract |
A stent-graft includes a graft and annular stent springs, including first, second, and third tapered stent springs, coupled to a generally tubular portion of the graft. Each of the tapered springs include stent cells that circumferentially taper to a set of one or more circumferentially-adjacent narrowest stent cells within the spring. The first and second tapered springs axially adjacent; the second and third tapered stent springs are axially adjacent. The narrowest stent cell sets of the first and second springs are rotationally positioned on the portion of the graft with a non-zero relative angle shift therebetween, as are the narrowest stent cell sets of the second and third springs. |